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62results about How to "Protective contact" patented technology

Contact member supporting hot plug and electric connector using same

InactiveCN104183943ASolve the problem of burning out the contact reedShorten discharge timeCoupling contact membersElectricityEngineering
The invention relates to electric connector field and especially to a contact member supporting hot plug and an electric connector using same. The contact member comprises a mother sleeve and a contact reed disposed in the mother sleeve. The mother sleeve comprises a front sleeve and a back sleeve fixedly connected together. The front sleeve is produced by arc extinguishing material and the front end of the front sleeve is provided with a contact structure used for electrically contacting an adaptive contact member. The contact structure is arranged in the front of the contact reed. The contact reed is fixedly connected with the back sleeve. When contact member and the adaptive contact member are plugged, the adaptive contact member firstly passes the front sleeve. The front sleeve is produced by the arc extinguishing material so as to be capable of effectively shortening discharging time and preventing the adaptive contact member and the front sleeve from being ablated. As a result, the contact performance of the contact member can be effectively protect after the contact member is subjected to hot plug, and a problem is solved that a conventional crowned hole contact member may burn out the contact reed because of hot plug.
Owner:CHINA AVIATION OPTICAL-ELECTRICAL TECH CO LTD

A goaf local filling supporting structure under a hard roof condition and a construction method thereof

ActiveCN109595029AControlled sinking motionRealize subsidenceMaterial fill-upEngineeringSlurry
The invention discloses a goaf local filling supporting structure body under a hard roof condition and a construction method thereof, and belongs to the technical field of rock stratum motion controlin coal mining. The supporting structure body comprises a filling body located in the goaf, lateral supporting bodies disposed on two sides of the filling body and isolation bodies. Each lateral support body comprises a concrete filled steel tube pier column, an anti-falling supporting leg and a flexible yielding component. The concrete filled steel tube pier column is a main supporting structure.The concrete-filled steel tube pier column is manufactured by pouring concrete grout into a seamless steel tube, the anti-falling supporting legs are arranged in the middle of the concrete-filled steel tube pier column, and each isolation body comprises a gangue bag wall built between the adjacent concrete-filled steel tube pier columns, a flexible side protection steel plate erected in a mannerof being tightly attached to the pier column and a waterproof plastic curtain hung on one side of the steel plate. Sufficient and long-term supporting resistance can be provided for overlying rock roofs, especially hard roofing rock stratums, in the goaf, and it is guaranteed that an elastic nuclear area exists in the center of the structure for a long time.
Owner:SHANDONG UNIV OF SCI & TECH

Energy storage device for electric operating mechanism

ActiveCN102779663ASimple and time-saving installationReduce volumeSwitch power arrangementsStored energyRelative Volume
The invention discloses an energy storage device for an electric operating mechanism. The energy storage device comprises a first spring chuck, a second spring chuck and a spring energy storage component which is arranged between the two spring chucks, wherein the spring energy storage component comprises an inner mounting sleeve and an outer mounting sleeve; the inner and outer mounting sleeves are provided with containing cavities capable of containing energy storage springs; one end of the inner mounting sleeve penetrates through the containing cavity of the outer mounting sleeve and is fixedly connected with the second spring chuck; the other end of the inner mounting sleeve is connected with the outer mounting sleeve through steps which are arranged corresponding to the inner and outer mounting sleeves; an outer energy storage spring is arranged between the outer mounting sleeve and the second spring chuck; an inner energy storage spring is arranged in the containing cavity of the outer mounting sleeve; and the outer ends of the first and second spring chucks are provided with mounting grooves. The energy storage device has the advantages that the device is simply mounted in a time-saving and labor-saving mode, the volume of the whole energy storage device can be effectively reduced, and the miniaturization development requirements of circuit breakers are met; and moreover, stored energy of the springs is increased in relative volume, contacts of the circuit breakers are effectively protected, and the cost is saved.
Owner:WUXI KAIXUAN MOTOR +1

Non-arc power-off protection switch control circuit

The invention discloses a non-arc power-off protection switch control circuit. The control circuit comprises a first switch, a second switch, a first time delay circuit, a first controllable switch, a second controllable switch, a second time delay circuit and a thyristor circuit, wherein one end of the first switch is connected to a live wire of a power supply, and the other end of the first switch is connected with a load; the first time delay circuit is used for rectifying output of the power supply and controlling on and off of the second controllable switch; the second time delay circuit is used for controlling on and off of the first controllable switch; the time constant of the second time delay circuit is smaller than the time constant of the first time delay circuit; the second switch is connected between a second input end of the second time delay circuit and a null wire; the thyristor circuit is in circuit connection between the live wire of the power supply and the load. The non-arc power-off protection switch control circuit has the characteristics of long life, simple structure and low cost.
Owner:KEDU ELECTRIC CO LTD

Using method of safety protection of high-voltage and direct current contactors for electric automobile

The invention discloses a using method of safety protection of a high-voltage and direct current contactors for an electric automobile. The using method comprises the steps that at the time of precharging a motor controller, specifically, a main negative contractor is closed when high voltage power-on of an electric automobile direct current high voltage system is conducted, then a precharging loop is closed to finish precharging of the motor controller, and finally a main positive contractor in the electric automobile direct current high voltage system is closed; and partition current flow direction outage is adopted at the time of the outage of the electric automobile direct current high voltage system. The specific process comprises the steps that if the current flow direction in the system is consistent with the current flow direction when precharging is conducted on the motor controller, the main positive contractor is switched off firstly and then the main negative contractor is switched off; and if the current flow direction in the system is opposite to the current flow direction when precharging is conducted on the motor controller, the main negative contractor is switched off firstly and then the main positive contractor is switched off. In the process of charging and discharging of the high voltage system, the effect of protecting the contact points of the high voltage contractors is achieved by controlling different closing orders of the main positive and negative contractors.
Owner:天津易鼎丰动力科技有限公司

Non-dismantling prefabricated concrete pile protecting die plate and construction method

ActiveCN106049491AOvercome construction neckingOvercome defects such as collapsed holesBulkheads/pilesPrecast concreteEconomic shortage
The invention provides a non-dismantling prefabricated concrete pile protecting die plate and a construction method. The non-dismantling prefabricated concrete pile protecting die plate comprises a prefabricated concrete protecting layer and concave arc shaped concrete bumps arranged at the inner side of the protecting layer, wherein a full-length hole is formed in the prefabricated concrete protecting layer; the concrete bumps are symmetrically arranged at intervals along the circumference of the inner side of the protecting layer. According to the design requirement, the construction method comprises the following steps: prefabricating and transporting the non-dismantling prefabricated concrete pile protecting die plate; levelling a site, and measuring a pile arranging position; hoisting and positioning the non-dismantling prefabricated concrete pile protecting die plate; performing a method combining mechanical soil excavation in the die plate and water injecting on the sidewall; constructing the bottom part of the die plate until the design height is reached, and then hoisting and positioning a reinforced cage; pouring concrete; grouting; maintaining until the pile is formed; and detecting a pile foundation. Compared with the prior art, the non-dismantling prefabricated concrete pile protecting die plate and the construction method have the advantages that the earth mass at the outside of a pile body, the underground water, the outer load and the like can be effectively stopped, so that the safety can be greatly improved; meanwhile, the non-dismantling prefabricated concrete pile protecting die plate is prefabricated in a factory, so that the construction quality can be ensured, and the construction period can be greatly reduced; the shortages such as necking down and hole collapse in traditional pile foundation construction can be overcome.
Owner:浙江长兴市政建设有限公司

A method for manufacturing a thin film thermocouple for measuring a local temperature of a fuel cell

A method for manufacturing a thin film thermocouple for measuring local temperature of a fuel cell comprise plating a sacrificial layer on a silicon wafer; A layer of Parylene film is deposited on thesacrificial layer as the lower protective layer of the thin film thermocouple. The photoresist is spin-coated on the Parylene film for patterning, then a layer of copper-nickel alloy is plated, and the excess copper-nickel alloy is removed to obtain the patterned copper-nickel electrode; Spin-coating photoresist on Parylene film for patterning, then plating a layer of copper, removing excess copper to obtain patterned copper electrode; A layer of Parylene film is deposited on the copper-nickel electrode and the copper electrode as the upper protective layer of the thin film thermocouple. Spin-coating photoresist on Parylene film for patterning, then plating a layer of aluminum, removing excess aluminum to obtain patterned hard mask, then etching Parylene film, exposing electrode pins andetching through holes on the film; The sacrificial layer is dissolved and the thin film is peeled off from the silicon wafer to obtain a thin film thermocouple. The thin film thermocouple manufacturedby the invention has the advantages of thin thickness and small temperature measuring point size.
Owner:XI AN JIAOTONG UNIV

Light-focusing solar cell panel

The invention relates to a light-focusing solar cell panel, and the solar cell panel is provided with toughened glass located at the upper layer, a battery piece located at the central layer and a backboard located at the bottom layer. Ethylene and vinyl acetate copolymer adhesive films are disposed between the toughened glass and the battery piece and between the battery piece and the backboard. The toughened glass, the battery piece, the backboard and the ethylene and vinyl acetate copolymer adhesive films are pressed and bonded into one body through vacuum heating. According to the invention, the battery piece is disposed between the toughened glass and the backboard, thereby effectively preventing the battery piece from contacting with the outside, and prolonging the service life. A PN junction of the solar cell panel is shaped like a ball, can receive the sunlight to maximum degree, can eliminate the aberration of sunlight spots under the condition that the incident angle of the sun changes, and improve the photoelectric conversion rate. According to the invention, the PN junction of the solar cell panel is shaped like the ball, and there is no need of cutting operation, thereby greatly reducing the material loss. The usage amount of materials is one fifth of the usage amount of materials of a flat-type solar cell, thereby reducing the production cost.
Owner:梁结平

Leakage-proof air conditioner indoor and outdoor unit connecting pipeline

The invention discloses a leakage-proof air conditioner indoor and outdoor unit connecting pipeline which comprises a connecting pipeline body. Threaded connecting blocks are fixedly connected to twosides of the connecting pipeline body through sealing bearings; surface threaded pipes are in threaded connection with the inner sides of the threaded connecting blocks; the outer sides of the surfacethreaded pipes communicate with the air conditioner indoor unit and outdoor unit connecting pipe body; and sealing mechanisms are fixedly connected to two sides of the top and two sides of the bottomof the connecting pipe body correspondingly. According to the leakage-proof air conditioner indoor and outdoor unit connecting pipeline provided by the invention, by arranging the sealing mechanisms,sealing plate sleeves can be located at the joints between the threaded connecting blocks and the air conditioner indoor and outdoor unit connecting pipeline body so as to carry out sealing, then clamping blocks are used for positioning the sealing plate sleeves through pulling mechanisms, and the occurrence of the phenomenon that the sealing plate sleeves move when air conditioner indoor and outdoor units vibrate is prevented, so that water leakage prevention is carried out on the joints through the sealing plate sleeves, and the problem that water leakage prevention cannot be carried out onthe joints through the air conditioner indoor and outdoor unit connecting pipeline is solved.
Owner:北京点域科技有限公司

PH response type corrosion inhibition capsule based on metal polyphenol network structure and preparation and application of pH response type corrosion inhibition capsule

The invention discloses a pH response type corrosion inhibition capsule based on a metal polyphenol network structure and preparation and application of the pH response type corrosion inhibition capsule, and belongs to the field of application of novel materials. Mesoporous silicon dioxide with a large specific surface area is used as a carrier for loading corrosion inhibitor molecules, and then the corrosion inhibitor molecules are loaded into the mesoporous silicon dioxide through a vacuum loading method. Finally, through modification of organic acid with a polyphenol structure and metal ions, a metal-phenol network structure is generated outside the silicon dioxide, and the corrosion inhibitor capsule with targeting, pH responsiveness and anti-ultraviolet activity can be formed. The capsule corrosion inhibitor can be quickly released at low pH and slowly released in neutral and alkaline systems, so that release of the corrosion inhibitor is intelligent, the utilization efficiency of the corrosion inhibitor is improved, meanwhile, as the corrosion inhibitor molecules are loaded in the whole capsule, direct irradiation of ultraviolet light can be avoided, and when the capsule corrosion inhibitor is applied to an ultraviolet environment, the utilization rate of the corrosion inhibitor molecules is greatly increased.
Owner:HUAZHONG UNIV OF SCI & TECH +1

Device for grinding ultrasonic wave guide probe

A device for grinding an ultrasonic wave guide probe comprises a base, a stand column, a suspension arm, a probe clamp, a sliding guide rail base, a V-shaped sample tube fixing tank and a sample tube fixing clamp, wherein the base is provided with adjustment components for adjusting the level of the base; the stand column is fixedly connected on one side of the base; one end of the suspension arm is clamped on the stand column and can slide up and down along the stand column; the probe clamp is fixed at the other end of the suspension arm and connected with a probe when used; the sliding guide rail base is arranged on the other side of the base, and machining sliding rails are arranged on the sliding guide rail base; the V-shaped sample tube fixing tank is mounted right above the sliding guide rail base, the top of the V-shaped sample tube fixing tank is used for accommodating a tube with the diameter identical to that of a required ground probe, and lower sliding rails in fit connection with the machining sliding rails are arranged at the bottom of the V-shaped sample tube fixing tank; the sample tube fixing clamp is arranged above the V-shaped sample tube fixing tank and penetrates through the tube arranged on the V-shaped sample tube fixing tank, two ends of the sample tube are fixed on outer sides of the V-shaped sample tube fixing tank, the sample tube fixing clamp is matched with the V-shaped sample tube fixing tank to fix the tube, and accordingly, the tube can be prevented from shaking in the probe grinding process.
Owner:STATE GRID CORP OF CHINA +2

Energy storage device for electric operating mechanism

ActiveCN102779663BSimple and time-saving installationReduce volumeSwitch power arrangementsStored energyRelative Volume
The invention discloses an energy storage device for an electric operating mechanism. The energy storage device comprises a first spring chuck, a second spring chuck and a spring energy storage component which is arranged between the two spring chucks, wherein the spring energy storage component comprises an inner mounting sleeve and an outer mounting sleeve; the inner and outer mounting sleeves are provided with containing cavities capable of containing energy storage springs; one end of the inner mounting sleeve penetrates through the containing cavity of the outer mounting sleeve and is fixedly connected with the second spring chuck; the other end of the inner mounting sleeve is connected with the outer mounting sleeve through steps which are arranged corresponding to the inner and outer mounting sleeves; an outer energy storage spring is arranged between the outer mounting sleeve and the second spring chuck; an inner energy storage spring is arranged in the containing cavity of the outer mounting sleeve; and the outer ends of the first and second spring chucks are provided with mounting grooves. The energy storage device has the advantages that the device is simply mounted in a time-saving and labor-saving mode, the volume of the whole energy storage device can be effectively reduced, and the miniaturization development requirements of circuit breakers are met; and moreover, stored energy of the springs is increased in relative volume, contacts of the circuit breakers are effectively protected, and the cost is saved.
Owner:WUXI KAIXUAN MOTOR +1

Connector

The invention relates to a plug connector (2), especially a high-frequency connector, comprising: a first connecting piece (4), especially a coaxial connector, having a first inner conductor part (14), a first outer conductor part (28) and a first insulating part (26) for retaining said first inner conductor part ( 14); and a second connecting piece (6), in particular a coaxial connector, for axially inserting into said first connecting piece (4) along the joining direction (F), and having a second inner conductor portion ( 34), a second outer conductor part (38) and a second insulating part (36), the second insulating part is used to keep the The second inner conductor part (34); wherein, when the first connector (4) and the second connector (6) are inserted, the first inner conductor part (14) is electrically and Mechanically contacting the second inner conductor portion (34), and the first outer conductor portion (28) electrically and mechanically contacting the second outer conductor portion (38); wherein the first An outer conductor part (28) having a first outer conductor contact section (32) for electrically and mechanically contacting a second outer conductor contact section (40) on said second outer conductor part (38) ; Wherein, the first outer conductor part (28) has a first guide surface (20), and the second outer conductor part (38) has a second guide surface (18), and these guide surfaces are designed such that it is in the When the first connecting piece (4) is inserted into the second connecting piece (6), it can mechanically slide over each other. The first guide surface (20) of the first connection piece (4) and the first outer conductor contact section (32) are axially directed with respect to the longitudinal axis (50) of the connector (2) Arranged at a distance from each other, the second guide surface (18) of the second connection piece and the second outer conductor contact section (14) are axially relative to all of the plug connector (2) The longitudinal axes (50) are arranged at a distance from one another. The first connecting piece (4) has another third guiding surface (44), which is used for passing through the second connecting piece (6) when the first connecting piece (4) is engaged with the second connecting piece (6). The other fourth guiding surface (42) of the two connecting parts (6) cooperates to guide the second connecting part (6).
Owner:ROSENBERGER HOCHFREQUENZTECHNIK GMBH & CO KG +2
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